134431211 has 4 divisors (see below), whose sum is σ = 139066800. Its totient is φ = 129795624.

The previous prime is 134431183. The next prime is 134431217. The reversal of 134431211 is 112134431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112134431 = 17 ⋅6596143.

It is a cyclic number.

It is not a de Polignac number, because 134431211 - 2²⁶ = 67322347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134431217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317751 + ... + 2317808.

It is an arithmetic number, because the mean of its divisors is an integer number (34766700).

Almost surely, 2^134431211 is an apocalyptic number.

134431211 is a deficient number, since it is larger than the sum of its proper divisors (4635589).

134431211 is an equidigital number, since it uses as much as digits as its factorization.

134431211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635588.

The product of its digits is 288, while the sum is 20.

The square root of 134431211 is about 11594.4474210719. The cubic root of 134431211 is about 512.2713138748.

Adding to 134431211 its reverse (112134431), we get a palindrome (246565642).

The spelling of 134431211 in words is "one hundred thirty-four million, four hundred thirty-one thousand, two hundred eleven".